Pennsylvania Railroad class J1

Specifications
Specifications
Configuration:;
• Whyte	2-10-4
• UIC	1′E2′ h
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	69 in (1.753 m), later 70 in (1.778 m)
Length	117 ft 8 in (35.86 m)
Width	11 ft 3 in (3.43 m)
Height	16 ft 5.5 in (5.02 m)
Adhesive weight	377,800 lb (171.4 t)
Loco weight	J-1 class: 589,975 lb (267.6 t) ; J-1a class: 579,975 lb (263.1 t)
Tender weight	411,500 lb (186.7 t)
Total weight	J-1 class: 1,001,475 lb (454.3 t) ; J-1a class: 991,475 lb (449.7 t)
Tender type	Coast-to-Coast
Fuel type	Coal
Fuel capacity	60,000 lb (27.2 t)
Water cap.	21,000 US gal (79,000 L; 17,000 imp gal)
Firebox:
• Grate area	122 sq ft (11.3 m2)
Boiler	106 in (2,692 mm)
Boiler pressure	270 psi (1.86 MPa)
Cylinders	Two
Cylinder size	29 in × 34 in (737 mm × 864 mm)
Valve gear	Baker

Type and origin
Type and origin
Power type	Steam
Builder	PRR Altoona Works
Build date	1942–1944
Total produced	125

Pennsylvania Railroad J1
Pennsylvania Railroad J1
Power type
Type and origin
Power type	Steam
Builder	PRR Altoona Works
Build date	1942–1944
Total produced	125
Configuration:;
Specifications
Configuration:;
• Whyte	2-10-4
• UIC	1′E2′ h
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	69 in (1.753 m), later 70 in (1.778 m)
Length	117 ft 8 in (35.86 m)
Width	11 ft 3 in (3.43 m)
Height	16 ft 5.5 in (5.02 m)
Adhesive weight	377,800 lb (171.4 t)
Loco weight	J-1 class: 589,975 lb (267.6 t) ; J-1a class: 579,975 lb (263.1 t)
Tender weight	411,500 lb (186.7 t)
Total weight	J-1 class: 1,001,475 lb (454.3 t) ; J-1a class: 991,475 lb (449.7 t)
Tender type	Coast-to-Coast
Fuel type	Coal
Fuel capacity	60,000 lb (27.2 t)
Water cap.	21,000 US gal (79,000 L; 17,000 imp gal)
Firebox:
• Grate area	122 sq ft (11.3 m2)
Boiler	106 in (2,692 mm)
Boiler pressure	270 psi (1.86 MPa)
Cylinders	Two
Cylinder size	29 in × 34 in (737 mm × 864 mm)
Valve gear	Baker
Maximum speed
Performance figures
Maximum speed	50 mph
Power output	5,644 hp (4,209 kW)
Tractive effort	95,100 lbf (423.0 kN) ; Booster: 15,000 lb (6.8 t) ; Loco w/Booster: 110,100 lb (49.9 t)
Numbers
Career
Numbers	6150–6174, 6401–6500
Nicknames	War Babies
Locale	Pennsylvania Railroad
Retired	1958-1959
Scrapped	1958-1959
Disposition	124 scrapped, 6435 is rumored to still be around, but not confirmed.

The PRR J1 was a class of 2-10-4 "Texas" type steam locomotives built between 1942 and 1944. The J1 had over 95,000 pounds-force (422.6 kN) of tractive effort, plus an additional 15,000 lbf (66.7 kN) if the booster engine was used.

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